<?php
/**
 * Smarty plugin
 * @package Smarty
 * @subpackage plugins
 */


/**
 * Smarty {counter} function plugin
 *
 * Type:     function<br>
 * Name:     counter<br>
 * Purpose:  print out a counter value
 * @author Monte Ohrt <monte at ohrt dot com>
 * @link http://smarty.php.net/manual/en/language.function.counter.php {counter}
 *       (Smarty online manual)
 * @param array parameters
 * @param Smarty
 * @return string|null
 */
function smarty_function_counter($params, &$smarty)
{
	static $counters = array();

	$name = (isset($params['name'])) ? $params['name'] : 'default';
	if (!isset($counters[$name])) {
		$counters[$name] = array(
            'start'=>1,
            'skip'=>1,
            'direction'=>'up',
            'count'=>1
		);
	}
	$counter =& $counters[$name];

	if (isset($params['start'])) {
		$counter['start'] = $counter['count'] = (int)$params['start'];
	}

	if (!empty($params['assign'])) {
		$counter['assign'] = $params['assign'];
	}

	if (isset($counter['assign'])) {
		$smarty->assign($counter['assign'], $counter['count']);
	}

	if (isset($params['print'])) {
		$print = (bool)$params['print'];
	} else {
		$print = empty($counter['assign']);
	}

	if ($print) {
		$retval = $counter['count'];
	} else {
		$retval = null;
	}

	if (isset($params['skip'])) {
		$counter['skip'] = $params['skip'];
	}

	if (isset($params['direction'])) {
		$counter['direction'] = $params['direction'];
	}

	if ($counter['direction'] == "down")
	$counter['count'] -= $counter['skip'];
	else
	$counter['count'] += $counter['skip'];

	return $retval;

}

/* vim: set expandtab: */

?>
